He also thanked his well-wishers, as well as the medical and nursing team from the Urological Department of Singapore General Hospital.

Mr Goh, who underwent surgery on Saturday, said he only allowed three visitors, apart from immediate family members, to visit him.

Among them was former MP and presidential candidate Dr Tan Cheng Bock.

"I also had an almost hour-long chat with Tan Cheng Bock, my close friend from school. We talked about mutual friends, health issues and families.

"Thanks, Bock. I am glad to see you in good health and keeping yourself busy," wrote Mr Goh.

The other two visitors were patrons of grassroot organisations in Mr Goh's Marine Parade ward, Mr Ng Hock Lye and Mr Danny Ng. The former had underwent surgery to have two stents inserted in his arteries.

Mr Goh added that he will have to cancel his appointments this week, but should be back to work next week and will be keeping his lunch appointment with Prime Minister Lee Hsien Loong next Thursday.

Mr Goh has been updating the public about his condition on Facebook.

On Monday, he thanked his well-wishers and wrote that he was recovering well, except for his only discomfort: "I have not 'broken wind' yet and hence not allowed food or fluids, other than small sips of water."

He is expected to make a full recovery as the cancer was detected early.